RSpec.configure do |config| config.before(:all) do on_client do class TestComponent < React::Component::Base param scope: :all render(:div) do div { "#{TestModel.send(params.scope).count} items" } ul { TestModel.send(params.scope).each { |model| li { model.test_attribute }}} end end class TestComponent2 < React::Component::Base render do "hello" end end end end end